include/asm-arm/arch-pxa/entry-macro.S

   1 /*
   2  * include/asm-arm/arch-pxa/entry-macro.S
   3  *
   4  * Low-level IRQ helper macros for PXA-based platforms
   5  *
   6  * This file is licensed under  the terms of the GNU General Public
   7  * License version 2. This program is licensed "as is" without any
   8  * warranty of any kind, whether express or implied.
   9  */
  10 #include <asm/hardware.h>
  11 #include <asm/arch/irqs.h>
  12
  13                 .macro  disable_fiq
  14                 .endm
  15
  16                 .macro  get_irqnr_preamble, base, tmp
  17                 .endm
  18
  19                 .macro  arch_ret_to_user, tmp1, tmp2
  20                 .endm
  21
  22                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  23 #ifdef CONFIG_PXA27x
  24                 mrc     p6, 0, \irqstat, c0, c0, 0              @ ICIP
  25                 mrc     p6, 0, \irqnr, c1, c0, 0                @ ICMR
  26 #else
  27                 mov     \base, #io_p2v(0x40000000)      @ IIR Ctl = 0x40d00000
  28                 add     \base, \base, #0x00d00000
  29                 ldr     \irqstat, [\base, #0]           @ ICIP
  30                 ldr     \irqnr, [\base, #4]             @ ICMR
  31 #endif
  32                 ands    \irqnr, \irqstat, \irqnr
  33                 beq     1001f
  34                 rsb     \irqstat, \irqnr, #0
  35                 and     \irqstat, \irqstat, \irqnr
  36                 clz     \irqnr, \irqstat
  37                 rsb     \irqnr, \irqnr, #(31 - PXA_IRQ_SKIP)
  38 1001:
  39                 .endm